Wheeled scraper.



N. S. DUNAWAY.

WHEBLED SGRAPER. APPLICATION FILED we. 6-. 1907.

PATENTED M BJ 1908.

NORMAN s. DUNAWAY, or PELHAM, ALABAMA.

WHEELED SCRAPER.

Specification of Letters Patent.

Patented March 10, 1908.

Application filed August 6, 1907. Serial No. 387,373.

To all whom it may concern:

Be it known that I, NORMAN S. DUNAWAY, a citizen of the United States,residing at Pelham, in the county of Shelby and State of Alabama, haveinvented a Wheeled Scraper, of which the following is a specification.

This invention is an improvement in wheeled scrapers or scoops employedin excavating, and relates more especially to the provision of certaindevices or attachments to facilitate the operation of the latch devices.

The primary object of my invention is to provide a wheeled scraper orscoop with certain attachments or springs for the purpose of causing apositive connection between the scoop or pan and the catch-bars withwhich it is adapted to engage in the operation of lifting the scoop orpan for carrying the dirt and in the operation of disposing said scoopor pan to dump the dirt or contents.

The invention consists, therefore, in the combination with the arts ofthe scoop of certain attachments of particular construction, all ashereinafter fully described and specifically set forth in the appendedclaims.

In the drawings, which form a part of this specification: Figure 1 is aside elevation of a wheeled scraper or scoop showing the application ofmy invention thereto. Fig. 2 is an enlarged detail view showing theapplication of the spring device employed in connection with the liftinglatch-bar. Fig. 3 is an enlarged detail view of the spring employed inconnection with the front latch-bar which supports the scoop in dumpingposition. Fig. 4 is a detail view of the spring used in connection withthe lifting latch-bar.

Like numerals of reference indicate like parts in the several figures ofthe drawings.

Referring to Fig. 1, in which I have shown one form of wheeled scraperor scoop, 5 designates the Wheels, which are journaled on the ends of anarched axle 6, and from the latter is supported the scoop or pan 7.Bolted to the arched axle 6 are bars 8 which are pivoted at theirforward ends to straps 9 attached to the forward portion of the scoop orpan, and said bars are attached to a handle-barlO secured at its forwardend to the central portion of the arched axle, being curved upward topermit of the required movement of the scoop in dumping.

The draft appliances, to which the draftanimals are attached areconnected at their rear ends to the scoop, as shown in Fig. 1 of thedrawings, and to the cross-bar 11 of the draft-appliances is pivoted alatch-bar 12 which is adapted to support the scoop or pan in the dumplngposition.

In order to insure the proper operation of the latch-bar 12 I attach tothe same a helical spring 13, said spring being secured at one end tothe latch-bar and at the other end to the cross-bar 11 of thedraft-appliances, and acts to exert a rearward yielding movement of thebar so that it will positively engage the catch-plate 14 at the'rear endof the scoop and be held firmly in such engagement.

The handle-bar 10 of the machine is provided with the usual pivotedlatch-bar 15 having a rearwardly projecting rod 15 by which it isoperated to disengage the pan, said latch-bar being adapted to engagethe catch-plate 14 at the rear end of said pan when the handle-bar islowered for the purpose of lifting the scoop or pan, and so that thelatter may be carried by the wheels. In order to insure a positiveengagement of the latch-bar 15 I provide an attachment or spring devicewhich I shall now proceed to describe. This attachment or spring deviceis constructed so that it may be readily applied, and thereforecomprises a coiled spring 17 and extended end members 18 and 19; one ofsaid members, as 18, terminating in an eye 18 which engages theoperatingrod 15 of the latch-bar 15, while the other member, as 19, isprovided with a loop portion 19 and a bent end 19*, said loop portionengaging the pivot-bolt 20 of the latchbar while the bent end engagesthe lower edge of the scoop supporting bar to hold the device inposition.

It will be readily seen that in applying the spring device to thelatch-bar 15 it is only necessary to slip one end of the same upon therod 15*, and then slip the other end over the end of the pivot-bar afterremoving the nut, and when the nut is again applied on the bolt the bentend engaging the lower edge of the supporting-bar will preventdisengagement in case the nut should become loose.

From the foregoing it will be apparent that by the employment of thespring devices which are attached to the latch-bars the operation of thelatter will be more positive, and will be such as to hold the scoop orpan in the positions to which it is swung in both carrying the dirt andin dumping it.

In the operation, after the scoop or pan has been filled the handle-bar10 is lowered to lift the scoop or pan, and when the latch-bar 15engages the catch 16 the said scoop or pan will be held in an elevatedposition or above the ground so that the dirt may be carried by thewheels to the place of dumping. In this operation the spring 17 willsecurely hold the latch-bar 15 in engagement with the scoop and so thatit will not be accidentally disengaged by the j olting of the machine inpassing over the ground.

When it is desired to dump the contents of the scoop or pan thehandle-bar 10, which is. in engagement with the rear end of the scoop orpan is raised and swung forward until the forward latch-bar 12 engagesthe catch-plate 14 when the scoop or pan will be disposed in its dumpingposition with its open end rearward. In this position of the parts thespring 13 serves to hold the latchbar 12 in engagement With the pan andso that the open end of the latter will not swing down and engage theground.

From the foregoing it will be seen therefore that I provide simple andeflective devices which will cause a positive operation of the scoop andWill prevent the same from becoming accidentally disengaged from thelatch-bars.

l Though I have herein shown myinvention as applied to a Pi'LltlGUlfilstyle of wheeled scraper or scoop it will be understood that it might beapplied to a scoop or scraper constructed slightly different from thatherein shown but provided with latch-bars for suptions.

Having thus described my invention, I claim:

In a wheeled scraper or scoop, the combination with the arched axle,handle-bars and scoop supported by the latter, of a latchbar pivoted tothe handle-bars and having a rearwardly projecting rod, a spring havingan end member with an eye which engages the rod and an end member with aloop portion engaging the pivot-bolt of the latch-bar and a bent endengaging the lower edge of the handle-bar, substantially as herein shownand described.

name to this specification in the presence of two subscribing witnesses.

NORMAN S. DUNAIVAY. IVitnesses N. L. RUFFIN, WILEY TEM JonNsoN.

porting the scoop or pan in its different posi- In testimony whereof Ihave signed my

